Question

A can complete a work in 20 days, B can complete the same work in 30 days. If both put 18 bricks less per day then work will complete in 20 days. How many bricks in the wall?

Answer 1

Answer:

Assume there are in total x bricks.

So, according to questoins , A will use x/15 bricks per hour and B will use x/20 bricks per hour.

Now we they work together, number of bricks per hour used by them will be (x/15+x/20 – 180) and these we can say that for 12 hours of work,

(x/15+x/20 – 180) * 12 = x.

Use these equation to find x.

Step-by-step explanation:

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